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Training object detectors demands extensive, task-specific annotations, yet this requirement becomes impractical in UAV-based human detection due to constantly shifting target distributions and the scarcity of labeled images. As a remedy,…

Computer Vision and Pattern Recognition · Computer Science 2026-03-25 Wenda Li , Meng Wu , Liangzhao Chen , Sungmin Eum , Heesung Kwon , Qing Qu

We identify a core failure mode that occurs when using the usual linear interpolation on rotary positional embeddings (RoPE) for mixed-resolution denoising with Diffusion Transformers. When tokens from different spatial grids are mixed, the…

Computer Vision and Pattern Recognition · Computer Science 2025-11-26 Haoyu Wu , Jingyi Xu , Qiaomu Miao , Dimitris Samaras , Hieu Le

Physics-informed diffusion models typically enforce PDE constraints only on final outputs, leaving intermediate representations unconstrained and prone to shortcut learning under shifted boundary conditions. We introduce **REPA-P**, a…

Machine Learning · Computer Science 2026-05-21 Haozhe Jia , Pengyu Yin , Wenshuo Chen , Shaofeng Liang , Lei Wang , Bowen Tian , Xiucheng Wang , Nanqian Jia , Yutao Yue

Inspired by recent advances in diffusion models, which are reminiscent of denoising autoencoders, we investigate whether they can acquire discriminative representations for classification via generative pre-training. This paper shows that…

Computer Vision and Pattern Recognition · Computer Science 2023-08-22 Weilai Xiang , Hongyu Yang , Di Huang , Yunhong Wang

Diffusion policies are a powerful paradigm for robot learning, but their training is often inefficient. A key reason is that networks must relearn fundamental spatial concepts, such as translations and rotations, from scratch for every new…

Robotics · Computer Science 2026-03-10 Xiatao Sun , Yuxuan Wang , Shuo Yang , Yinxing Chen , Daniel Rakita

Human pose estimation (HPE) has received increasing attention recently due to its wide application in motion analysis, virtual reality, healthcare, etc. However, it suffers from the lack of labeled diverse real-world datasets due to the…

Computer Vision and Pattern Recognition · Computer Science 2024-12-31 Qucheng Peng , Ce Zheng , Zhengming Ding , Pu Wang , Chen Chen

Inference-time alignment provides an efficient alternative for aligning LLMs with humans. However, these approaches still face challenges, such as limited scalability due to policy-specific value functions and latency during the inference…

Computation and Language · Computer Science 2025-05-27 Ruizhe Chen , Wenhao Chai , Zhifei Yang , Xiaotian Zhang , Joey Tianyi Zhou , Tony Quek , Soujanya Poria , Zuozhu Liu

Direct Preference Optimization (DPO) has emerged as a predominant alignment method for diffusion models, facilitating off-policy training without explicit reward modeling. However, its reliance on large-scale, high-quality human preference…

Computer Vision and Pattern Recognition · Computer Science 2026-02-09 Khiem Pham , Quang Nguyen , Tung Nguyen , Jingsen Zhu , Michele Santacatterina , Dimitris Metaxas , Ramin Zabih

Diffusion models have exhibited promising progress in video generation. However, they often struggle to retain consistent details within local regions across frames. One underlying cause is that traditional diffusion models approximate…

Computer Vision and Pattern Recognition · Computer Science 2024-05-03 Yupu Yao , Shangqi Deng , Zihan Cao , Harry Zhang , Liang-Jian Deng

With the success of self-supervised learning, multimodal foundation models have rapidly adapted a wide range of downstream tasks driven by vision and language (VL) pretraining. State-of-the-art methods achieve impressive performance by…

Computer Vision and Pattern Recognition · Computer Science 2023-08-21 Yeming Chen , Siyu Zhang , Yaoru Sun , Weijian Liang , Haoran Wang

Precision pathology relies on detecting fine-grained morphological abnormalities within specific Regions of Interest (ROIs), as these local, texture-rich cues - rather than global slide contexts - drive expert diagnostic reasoning. While…

Computer Vision and Pattern Recognition · Computer Science 2026-01-27 Chunze Yang , Wenjie Zhao , Yue Tang , Junbo Lu , Jiusong Ge , Qidong Liu , Zeyu Gao , Chen Li

Diffusion models have achieved outstanding image generation by reversing a forward noising process to approximate true data distributions. During training, these models predict diffusion scores from noised versions of true samples in a…

Computer Vision and Pattern Recognition · Computer Science 2025-04-16 Dazhong Shen , Guanglu Song , Yi Zhang , Bingqi Ma , Lujundong Li , Dongzhi Jiang , Zhuofan Zong , Yu Liu

Recent video diffusion models (VDMs) synthesize visually convincing clips, yet still drop entities, mis-bind attributes, and weaken the interactions specified in the prompt. Representation-alignment objectives such as VideoREPA and MoAlign…

Computer Vision and Pattern Recognition · Computer Science 2026-05-11 Jiesong Lian , Zixiang Zhou , Ruizhe Zhong , Yuan Zhou , Qinglin Lu , Rui Wang , Long Hu , Yixue Hao , Baoru Huang

In robotics, diffusion models can capture multi-modal trajectories from demonstrations, making them a transformative approach in imitation learning. However, achieving optimal performance following this regiment requires a large-scale…

Diffusion alignment aims to optimize diffusion models for the downstream objective. While existing methods based on reinforcement learning or direct backpropagation achieve considerable success in maximizing rewards, they often suffer from…

Machine Learning · Computer Science 2026-03-09 Jaewoo Lee , Minsu Kim , Sanghyeok Choi , Inhyuck Song , Sujin Yun , Hyeongyu Kang , Woocheol Shin , Taeyoung Yun , Kiyoung Om , Jinkyoo Park

Diffusion models have achieved remarkable success in image generation, yet their training is predominantly driven by full-reference objectives that enforce pixel-wise similarity to ground-truth images.Such supervision, while effective for…

Computer Vision and Pattern Recognition · Computer Science 2026-04-30 Yang Yang , Feifan Meng , Han Fang , Weiming Zhang

REPresentation Alignment (REPA) improves the training of generative flow models by aligning intermediate hidden states with pretrained teacher features, but its effectiveness in token-conditioned audio Flow Matching critically depends on…

Sound · Computer Science 2026-05-29 Pengfei Zhang , Tianxin Xie , Minghao Yang , Li Liu

Vision Transformers require significant computational resources and memory bandwidth, severely limiting their deployment on edge devices. While recent structured pruning methods successfully reduce theoretical FLOPs, they typically operate…

Computer Vision and Pattern Recognition · Computer Science 2026-03-13 Andy Li , Aiden Durrant , Milan Markovic , Georgios Leontidis

Diffusion models exhibit impressive scalability in robotic task learning, yet they struggle to adapt to novel, highly dynamic environments. This limitation primarily stems from their constrained replanning ability: they either operate at a…

Robotics · Computer Science 2025-07-16 Xi Ye , Rui Heng Yang , Jun Jin , Yinchuan Li , Amir Rasouli

Preference alignment is usually achieved by weight-updating training on preference data, which adds substantial alignment-stage compute and provides limited mechanistic visibility. We propose Dynamic SAE Steering for Preference Alignment…

Machine Learning · Computer Science 2026-03-24 James Wedgwood , Aashiq Muhamed , Mona T. Diab , Virginia Smith